Hybris integration tasks

[MarcDiethelm]

Must

• [ ] Prepare module generator that can replace text. Needed to add templates to tag file.
• [ ] Create tag file if it doesn't exist, add to it if it does.

Should

• [x] Ability to specify module template file in generator/cli arg/config/.xtcrc

Could

• [ ] xtc install needs to list versions from somewhere else than xtc package releases in npm.
• [ ] Need ability to specify xtc repository tags / package releases in .xtcfile.